Okay this might be a really dumb question but I am going to ask anyway. I have just bought a new Kenwood Headunit for my car and it natively plays mp3/wma & iTunes Unprotected AAC files - this is a big bonus as most of my files are in AAC format. Now if I put a playlist together on itunes can I burn them as a aac disk or do I just burn them as a normal data disk? or will burning as mp3 cd keep the files as aac's ?? Many Thanks.